Picture receiving apparatus



Oct27, 193 c. J. YOUNG Y Re. 20,152

PICTURE RECEIVING APPARATUS Original Filed [larch 27, 1929 Inventor ChcirLes J. Young.

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HLs Attorneg Reissued Oct. 27, 1936 HGI'UBE' RECEIVING APPARATUS Charles J. Young, Haverford, Pa, allignor to General Electric Company, a

New York Original No. 1,842,882, ems March a. 1932. Serial No. 350,374, March 27, 1929.

Application for reisue February 24, 1934, Serial No. 112,855

10 Claims, (Cl. 17H) I My invention relates to the reception pictures or es, and has for its principal ob- Ject the provision of an improved apparatus and method of operation whereby the received picture or message is directly recorded without distortion and becomes available for use without subsequent processing as soon as it is produced.

Various types of picture receiving and 'recording apparatus have been provided in the past. Many of these apparatus are not altogether satisfactory for the reason that they are complicated in\structure, tend to distort the picture, do not permit the received picture to be used for sometime after-it is recorded, and are incapable of continuous operation. In accordance with my invention, these difliculties are avoided by the provision of a facsimile recorder which has its moving parts compactly grouped about a movable scanning member and so arranged that the operation of the apparatus is continuous and the picture is readily removed from the apparatus and Y becomes available for use immediately after its production.

My invention will be better understood from the following description when considered in connection with thevaccompanylng drawing and its scope will be pointed out in the appended claims.

Referring to the drawing, Fig. 1 illustrates a picture receiving and recording apparatus wherein my invention has been embodied; and Figs. 2

and 3 illustrate various details of the apparatus. The apparatus includes a cylinder Iii which is fixed to a rotatable shaft Ii and is provided with a spiral ridge i2 which may be formed by a small steel wire stretched in a spiral groove formed on the periphery of the cylinder in in any suitable manner.

Mounted at the oppoflte ends of the cylinder II and arrangedto rotate freely about the shaft II are a pairotbearings It to each of which-is fixed a sprocket wheel II 'and a gear IS. The gears I! are arranged to cooperate with gears it v which are fixed to a shaft i'l. With this arrangement, the cylinder II is rotated at the same speed as the shaft II and the sprocket wheels I l are driven at a speed which is determined by the speed of the mm l1 and the relation between the gears l5 and Ii. I

The sprocket wheels II are provided for the purposeofmovingaearbonbackedsheet i2 and a picture receiving sheet i! through the space between the cylinder II .and a printing bar 20. The bar 2|.is arranged to have its position with respect to the cylinder ll andrldse i2 controlled ubymansshownasapairof motors each including a permanent magnet 2|, an actuating coil 22 and a movable armature 23. The power for driving the 'drum I0 is applied through a worm 2i and a gear 26. The power for driving the sprocket wheels i4 is applied through 5 worm 25, gear 2ii worm 2i, gear 28, worm 29, and gears 20, i6 and I5. By this arrangement, the drum III is rotated at a comparatively high speed while the sprocket wheels I are rotated at a much lower speed. After the carbon backed'lo sheet ll passes through the space between the printing bar 20 and the ridge l2 of the drum Ill, it is rolled on the take-up roll 3| which is mechanically coupled to the shaft Ii through the pulleys 32 and 33 and the belt 34. Belt 34 is ar- 15 ranged to slip on pulley 32 to allow for variation in diameter of roll II.

For each revolution of the scanning drum Iii, one scanning line of the picture is produced. The rotational speed of the drum in revolutions per second is therefore determined by the desired number of scanning lines per second.. The

sprocket wheels it are geared down so that the carbon backed sheet l8 and the picture receiving sheet I! are driven at a much slower speed. In 25 the operation of the recording apparatus illustrated by the drawing, the movement of the sheets i8 and I! at the rate of about one inch per minute has been found satisfactory when the 'drum is rotated at I20 revolutions per minute. 30

the white sheet l9.

If the printing bar 20 were held in contact with the spiral ridge l2 during one complete revolution of thedrum It, a solid black line extendingacross the white sheet it would be produced. The actual number of dots produced ineach line is therefore determined by the number of times the printing bar 2| is brought into contact with the carbon backed paper it during 50 each revolution of the scanning drum ill. As

will be apparent to those skilled in the art, any

the moving parts of the receiving and recording apparatus. It should be understood that by the term carbon backed or bearing sheet which I have used in the description and claims I refer to any sheet which when pressed against the picture receiving paper will leave a mark on the latter. r t

The embodiment of the invention illustrated and described herein has been selected for the purpose of clearly setting forth the principles involved. It will be apparent, however, that the invention is susceptible ofbeing modified to meet the diflerent conditions encountered inits use and I therefore aim to cover by the appended claims all modifications within the true spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent 01 the United States, is:-

1. The combination of scanning means including a rotatable spiral member and a cooperating printing bar arranged to be moved radially with respect to said member, and means arranged to support and move carbon bearing and picture receiving sheets between said members independently of said bar.

2. The combination of a drum mounted on a rotatable shaft and provided with a spiral ridge, a printing bar arranged to be moved in accordance with the shade of the transmitted picture, and means rotatable about said shaft independently of said drum for moving a picture receiving sheet between said ridge and said bar.

3. A continuous picture recording apparatus comprising a rotatable member having a spiral ridge thereon, a cooperating printing bar, and a rotatable member coaxial with said first mentioned member adapted to support a cture receiving sheet and a carbon bearing shee between the printing bar and the spiral ridge.

- 4. A continuous picture recording apparatus comprising a rotatable member having a spiral ridge thereon, a printing bar arranged to cooperate therewith, and a rotatable member coaxial with said first mentioned member adapted to support and move a picture recei sheet and a carbon bearing sheet and means fo1 rotating said members at a constant ratio.

5. A continuous-picture recording ap tus comprising a rotatable member having a spiral ridge thereon, a cooperating printing'bar, actuating means therefor responsive to the received signal, and means for movably supporting continuous sheets of picture receiving and carbon bearing P per between the spiral ridge and the printing bar and independently of the printing 6., Picture recording apparatus having scanning means including a rotatable spiral member and a cooperating movable signal actuated member, and separate means for moving picture receiving and carbon bearing sheets between said members and in continuous engagement with said rotatable member. y

7. Picture recording apparatus comprising a rotatable cylinder having a spiral ridge thereon, a printing bar extending longitudinally of said cylinder, an electromagnet responsive to a received signal for moving the bar toward the cy1-, inder, a sprocket at each end 01' the cylinder adapted to engage carbon bearing and picture receiving paper and to move the same between the bar and the ridge, a driving motor and means for rotating the cylinder and the sprockets therefrom respectively at different speeds.

8. The combination of scanning means including a rotatable spiral member and a cooperating printing bar, a pair of independent spaced actuating members for said bar to balance the same against torsional twist and separate simultaneously operating means for moving the actuating members and the bar arranged to be moved substantially normal with respect to said member, and means arranged to support and move a recording surface upon which signals are visibly recorded between said members independently of said bar.

9. The combination of a drum mounted upon a rotatable shaft and provided with a spiral ridge, a printing bar, a pair of independent spaced actuating members for said bar to balance the same against torsional twist and separate simultaneously operating means for moving the actuating members and the bar arranged to be moved in and out substantially normal to the ridge and in accordance with the shade of the transmitted subject, and means operating independently of said drum for moving a recording surface between said ridge and said bar at a speed different from the peripheral speed of said drum.

1 0. The combination of a drum mounted on a rotatable shaft and provided with a spiral ridge, a printing bar, a pair of independent spaced actuating members for said bar to balance the same against torsional twist and separate simultaneously operating means for moving the actuating members and the bar arranged to be moved substantially normal to the ridge in accordance with the shade of the transmitted subject, and means for drawing a reproducing surface between the drum and bar at a rate substantially less than the peripheral speed of rotation of the drum.

CHARLES J. YOUNG. 

